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The numerical modelling of the subsoil deformation influence on a building |
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The numerical modelling of the subsoil deformation influence on a building Authors: L. Florkowska, J. Walaszczyk
The prediction of the infl uence of subsoil deformations on the condition of a building system is of
great importance as, among other things, it helps prevent mining damages. The designing of adequate
protections is based on the stress state determination, both of structural components and the subsoil
under-laying a building object.
Nevertheless, the problem of interaction between a building and the subsoil getting deformed is
diffi cult to solve because of its complexity. It is necessary to take into account many factors, such as the
geological structure and properties of the soil, the process of forming the mining trough, the conditions
at the contact between the building foundation and the subsoil and, fi nally, the structural mechanics and
the properties of building materials. Therefore numerical analysis seems to be the most adequate method
in the consideration of this problem.
For the past few years the Strata Mechanics Institute of the Polish Academy of Sciences has been
conducting research on numerical modelling of the infl uence of mining damages in the ground on buildings.
It has resulted in working out a system of method which take into account elastic, plastic and viscous
properties of the soil. Moreover, according to Budryk-Knothe’s theory of predicting ground deformations, it
makes it possible to simulate the shaping of a mining trough in space and time. The numerical calculations
are performed in the pack of programs FEM – Abaqus.
Keywords: numerical modelling, FEM, mining damages, building-subsoil interaction |
2011